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Earnings (Loss) Per Share
12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Earnings (Loss) Per Share EARNINGS (LOSS) PER SHARE
The following data shows the amounts used in computing earnings (loss) per share:
Income (Loss)
(Numerator)
Weighted
Shares
(Denominator)
Per-Share
Amount
 (In thousands except per share amounts)
For the year ended December 31, 2016:
Basic loss attributable to Unit Corporation per common share$(135,624)50,029 $(2.71)
Effect of dilutive stock options, restricted stock, and SARs— — — 
Diluted loss attributable to Unit Corporation per common share$(135,624)50,029 $(2.71)
For the year ended December 31, 2017:
Basic earnings attributable to Unit Corporation per common share$117,848 51,113 $2.31 
Effect of dilutive stock options
— 635 (0.03)
Diluted income attributable to Unit Corporation per common share$117,848 51,748 $2.28 
For the year ended December 31, 2018:
Basic loss attributable to Unit Corporation per common share(45,288)51,981 $(0.87)
Effect of dilutive restricted stock— — — 
Diluted loss attributable to Unit Corporation per common share$(45,288)51,981 $(0.87)
 
Due to the net loss for the years ended December 31, 2018 and 2016, approximately 934,000 and 509,000, respectively, weighted average shares related to stock options, restricted stock, and SARs were antidilutive and were excluded from the earnings per share calculation above.

The following options and their average exercise prices were not included in the computation of diluted earnings per share because the option exercise prices were greater than the average market price of our common stock for the years ended December 31:
201820172016
Options and SARs66,500 87,500 199,755 
Average exercise price$44.42 $51.34 $48.79